I have Rhino 3D but do not have 3D CAM software. And, I haven't yet taken the time to learn much of Rhino. I create drawings in AutoCAD 2D, recreate them in Inventor 3D to check part fit and appearance, then proceed to CNC-cut parts and assemble them for resin casting.
So far, I've cut simple round, smooth contours by manually placing tool paths at incremental cut depths of .001". Doing this with an IDE would be tedious, I know. . . .
Cedar Rapids, Iowa